$OpenBSD: patch-gcc_config_rs6000_openbsd_h,v 1.1.1.1 2016/09/04 16:20:17 pascal Exp $
--- gcc/config/rs6000/openbsd.h.orig	Fri Nov 15 12:47:25 2013
+++ gcc/config/rs6000/openbsd.h	Fri Nov 15 12:49:07 2013
@@ -0,0 +1,129 @@
+/* Configuration file for an rs6000 OpenBSD target.
+   Copyright (C) 1999 Free Software Foundation, Inc.
+
+This file is part of GNU CC.
+
+GNU CC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU CC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+/* XXX need to check ASM_WEAKEN_LABEL/ASM_GLOBALIZE_LABEL. */
+
+/* Run-time target specifications. */
+#undef TARGET_OS_CPP_BUILTINS	/* FIXME: sysv4.h should not define this! */
+#define TARGET_OS_CPP_BUILTINS()		\
+  do						\
+    {						\
+	OPENBSD_OS_CPP_BUILTINS_ELF();		\
+	builtin_define ("__PPC");		\
+	builtin_define ("__PPC__");		\
+	builtin_define ("__powerpc");		\
+	builtin_define ("__powerpc__");		\
+	builtin_assert ("cpu=powerpc");		\
+	builtin_assert ("machine=powerpc");	\
+    }						\
+  while (0)
+
+/* Override the default from rs6000.h to avoid conflicts with macros
+   defined in OpenBSD header files.  */
+
+#undef RS6000_CPU_CPP_ENDIAN_BUILTINS
+#define RS6000_CPU_CPP_ENDIAN_BUILTINS()	\
+  do						\
+    {						\
+      if (BYTES_BIG_ENDIAN)			\
+	{					\
+	  builtin_define ("__BIG_ENDIAN__");	\
+	  builtin_assert ("machine=bigendian");	\
+	}					\
+      else					\
+	{					\
+	  builtin_define ("__LITTLE_ENDIAN__");	\
+	  builtin_assert ("machine=littleendian"); \
+	}					\
+    }						\
+  while (0)
+
+#undef	CPP_OS_DEFAULT_SPEC
+#define CPP_OS_DEFAULT_SPEC "%(cpp_os_openbsd)"
+
+#undef LINK_SPEC
+#define LINK_SPEC "%{shared:-shared} \
+  %{!shared: \
+    %{!static: \
+      %{rdynamic:-export-dynamic} \
+      %{!dynamic-linker:-dynamic-linker /usr/libexec/ld.so}} \
+    %{static:-static}}"
+
+#undef	LIB_DEFAULT_SPEC
+#define LIB_DEFAULT_SPEC "%(lib_openbsd)"
+
+#undef	STARTFILE_DEFAULT_SPEC
+#define STARTFILE_DEFAULT_SPEC "%(startfile_openbsd)"
+
+#undef CRTSAVRES_DEFAULT_SPEC
+#define CRTSAVRES_DEFAULT_SPEC ""
+
+#undef	ENDFILE_DEFAULT_SPEC
+#define ENDFILE_DEFAULT_SPEC "%(endfile_openbsd)"
+
+#undef	LINK_START_DEFAULT_SPEC
+#define LINK_START_DEFAULT_SPEC "%(link_start_openbsd)"
+
+#undef	LINK_OS_DEFAULT_SPEC
+#define LINK_OS_DEFAULT_SPEC "%(link_os_openbsd)"
+
+/* Default ABI to use */
+#undef RS6000_ABI_NAME 
+#define RS6000_ABI_NAME "openbsd"
+
+/* Define this macro as a C expression for the initializer of an
+   array of string to tell the driver program which options are
+   defaults for this target and thus do not need to be handled
+   specially when using `MULTILIB_OPTIONS'.
+
+   Do not define this macro if `MULTILIB_OPTIONS' is not defined in
+   the target makefile fragment or if none of the options listed in
+   `MULTILIB_OPTIONS' are set by default.  *Note Target Fragment::.  */
+
+#undef	MULTILIB_DEFAULTS
+#define	MULTILIB_DEFAULTS { "mbig", "mcall-openbsd" }
+
+/* collect2 support (Macros for initialization). */
+
+
+/* Don't tell collect2 we use COFF as we don't have (yet ?) a dynamic ld
+   library with the proper functions to handle this -> collect2 will
+   default to using nm. */
+#undef OBJECT_FORMAT_COFF
+
+/* Some code gets optimized incorrectly by move_movables() in loop.c */
+#define	BROKEN_MOVE_MOVABLES_P
+
+/* This must agree with <machine/_types.h> */
+#undef SIZE_TYPE
+#define SIZE_TYPE "long unsigned int"
+
+#undef PTRDIFF_TYPE
+#define PTRDIFF_TYPE "long int"
+
+#undef WCHAR_TYPE
+#define WCHAR_TYPE	"int"
+
+#undef WCHAR_TYPE_SIZE
+#define WCHAR_TYPE_SIZE	32
+
+#undef TRAMPOLINE_SIZE
+#define TRAMPOLINE_SIZE 40
+
